JPS55100124A - Startup of bi-axial stretching for plastic tube and its apparatus - Google Patents

Startup of bi-axial stretching for plastic tube and its apparatus

Info

Publication number
JPS55100124A
JPS55100124A JP836879A JP836879A JPS55100124A JP S55100124 A JPS55100124 A JP S55100124A JP 836879 A JP836879 A JP 836879A JP 836879 A JP836879 A JP 836879A JP S55100124 A JPS55100124 A JP S55100124A
Authority
JP
Japan
Prior art keywords
roll
gas
tube
rolls
startup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP836879A
Other languages
Japanese (ja)
Other versions
JPS5721450B2 (en
Inventor
Kotaro Hayashi
Ko Morihara
Koji Nakamura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JNC Engineering Co Ltd
Original Assignee
Chisso Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chisso Engineering Co Ltd filed Critical Chisso Engineering Co Ltd
Priority to JP836879A priority Critical patent/JPS55100124A/en
Priority to IT47613/80A priority patent/IT1145427B/en
Priority to DE3001615A priority patent/DE3001615C2/en
Priority to US06/115,018 priority patent/US4290996A/en
Priority to FR8001593A priority patent/FR2447263A1/en
Publication of JPS55100124A publication Critical patent/JPS55100124A/en
Publication of JPS5721450B2 publication Critical patent/JPS5721450B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

PURPOSE: To facilitate stretching startup by taking up tube under friction force between tube and roll caused by tube's internal pressure after adjusting the clearance between take-up nip rolls and gas-sealing nip roll of equal speed.
CONSTITUTION: Tube material is caused to run at a prearranged position by closing nip rolls 2, 4 and opening nip roll 5 by a prearranged clearance. Roll 4 is turned at a slightly faster speed compared to the circumferential velocity of roll 2 so that roll 4 may provide tension to the tube material heating part and roll 5 is set at the same speed as roll 4. Tube material is cut right after roll 5 and connected to connector for gas sealing 6. Gas valve of the connector 6 is opened and at the same time, gas is sealed into the elongation part by opening take-up roll 4. The circumferential velocity of rolls 4, 5 is caused to be increased gradually against roll 2. When sufficient gas is sealed, rolls 4, 5 are closed to stop gas sealing and the connector 6 is removed. In this way, grooved roll is no longer required by virtue of friction force between the roll and tube material being utilized and stretching startup is facilitated.
COPYRIGHT: (C)1980,JPO&Japio
JP836879A 1979-01-27 1979-01-27 Startup of bi-axial stretching for plastic tube and its apparatus Granted JPS55100124A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP836879A JPS55100124A (en) 1979-01-27 1979-01-27 Startup of bi-axial stretching for plastic tube and its apparatus
IT47613/80A IT1145427B (en) 1979-01-27 1980-01-16 APPARATUS AND PROCEDURE FOR BIAXIAL LAYING OF PLASTIC FILM TUBES
DE3001615A DE3001615C2 (en) 1979-01-27 1980-01-17 Device for initiating biaxial stretching of plastic tubing
US06/115,018 US4290996A (en) 1979-01-27 1980-01-24 Method for initiating biaxial stretching of plastic tubes and apparatus therefor
FR8001593A FR2447263A1 (en) 1979-01-27 1980-01-25 METHOD AND APPARATUS FOR BIAXIALLY DRAWING A PLASTIC TUBE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP836879A JPS55100124A (en) 1979-01-27 1979-01-27 Startup of bi-axial stretching for plastic tube and its apparatus

Publications (2)

Publication Number Publication Date
JPS55100124A true JPS55100124A (en) 1980-07-30
JPS5721450B2 JPS5721450B2 (en) 1982-05-07

Family

ID=11691286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP836879A Granted JPS55100124A (en) 1979-01-27 1979-01-27 Startup of bi-axial stretching for plastic tube and its apparatus

Country Status (5)

Country Link
US (1) US4290996A (en)
JP (1) JPS55100124A (en)
DE (1) DE3001615C2 (en)
FR (1) FR2447263A1 (en)
IT (1) IT1145427B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3119006C2 (en) * 1981-05-13 1983-09-01 Windmöller & Hölscher, 4540 Lengerich Device for injecting air or gas into a tubular film web
US4659534A (en) * 1983-10-24 1987-04-21 Teijin Limited Production of thin-walled cylindrical body of aromatic polyester
GB2201371A (en) * 1987-01-02 1988-09-01 Windmoeller & Hoelscher Apparatus for producing tubular thermoplastic biaxially oriented film
JPS6471727A (en) * 1987-09-11 1989-03-16 Idemitsu Petrochemical Co Method and device for tubular orientation of thermoplastic resin
DE3939363A1 (en) * 1989-11-29 1991-06-06 Aesculap Ag Resorbable plastic implants production - by extruding rectangular poly-L-lactide cross=section and stretching it within specific temp. range to acquire high mechanical strength
CA2077941C (en) * 1992-07-07 2000-06-20 John Louis Varadi Automatic bubble blower for orientation film lines
WO1994020275A1 (en) * 1993-03-02 1994-09-15 Kabushiki Kaisha Hoshi Plastic Method of and machine for cutting strand, and method of operating the machine
AU2018202202B2 (en) * 2017-03-31 2023-01-19 Shin-Etsu Chemical Co., Ltd. Method for producing polymer tube containing liquid and being sealed at constant intervals and apparatus for producing polymer tube

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE864504C (en) * 1938-03-24 1953-01-26 Wolff & Co Kommanditgesellscha Process for the production of tubes, in particular artificial sausage casings of high strength, from viscose solutions
US2744336A (en) * 1952-04-04 1956-05-08 American Viscose Corp Threading apparatus for a tubular drier
GB1282062A (en) * 1969-03-08 1972-07-19 Showa Denko Kk A method and apparatus for manufacturing a biaxially oriented cylindrical film
US3960997A (en) * 1971-08-31 1976-06-01 Horsens Plastic A/S Method of manufacturing biaxially stretched shrink foils and an apparatus for carrying the method into effect
JPS4840855A (en) * 1971-09-23 1973-06-15
FR2205401A1 (en) * 1972-11-08 1974-05-31 Flax V Orientation of small bore tubular film - by local constriction of trapped bubble to cause radial dilation
DE2403290A1 (en) * 1974-01-24 1975-07-31 Dimitrijevic Milorad Dipl Ing Shortened guide path installation for extruded tubular film mfr. - uses flattening squeeze rollers immediately after the blowing step, and any desired number of guide rollers

Also Published As

Publication number Publication date
IT8047613A0 (en) 1980-01-16
US4290996A (en) 1981-09-22
DE3001615A1 (en) 1980-07-31
FR2447263A1 (en) 1980-08-22
JPS5721450B2 (en) 1982-05-07
DE3001615C2 (en) 1982-09-23
FR2447263B1 (en) 1983-05-27
IT1145427B (en) 1986-11-05

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